PLEASE HELP ME THANKS SO Much

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

What statement is true? 2x^2-9x+2=-1

See attachment below and find the equivalent of tan(∠qsr)